Process for preparing isoprenal and/or prenal

Abstract

In a process for preparing isoprenal and/or prenal by bringing a gaseous reactant stream comprising isoprenol into contact with a silver-containing heterogeneous catalyst in the presence of molecular oxygen to obtain an isoprenal and/or prenal-containing product stream, a weight ratio of formaldehyde to isoprenol of less than 0.04 is maintained in the reactant stream. The process maintains high conversion and selectivity over time and avoids catalyst clogging and pressure drop.

Dependencies are inferred from the claim text.